merge server with github

mods/pipeworks/flowing_logic.lua

@@ -0,0 +1,121 @@
+-- This file provides the actual flow and pathfinding logic that makes water
+-- move through the pipes.
+--
+-- Contributed by mauvebic, 2013-01-03, rewritten a bit by Vanessa Ezekowitz
+--
+
+local finitewater = minetest.setting_getbool("liquid_finite")
+
+pipeworks.check_for_liquids = function(pos)
+	local coords = {
+		{x=pos.x,y=pos.y-1,z=pos.z},
+		{x=pos.x,y=pos.y+1,z=pos.z},
+		{x=pos.x-1,y=pos.y,z=pos.z},
+		{x=pos.x+1,y=pos.y,z=pos.z},
+		{x=pos.x,y=pos.y,z=pos.z-1},
+		{x=pos.x,y=pos.y,z=pos.z+1},	}
+	for i =1,6 do
+		local name = minetest.get_node(coords[i]).name
+		if name and string.find(name,"water") then
+			if finitewater then minetest.remove_node(coords[i]) end
+			return true
+		end
+	end
+	return false
+end
+
+pipeworks.check_for_inflows = function(pos,node)
+	local coords = {
+		{x=pos.x,y=pos.y-1,z=pos.z},
+		{x=pos.x,y=pos.y+1,z=pos.z},
+		{x=pos.x-1,y=pos.y,z=pos.z},
+		{x=pos.x+1,y=pos.y,z=pos.z},
+		{x=pos.x,y=pos.y,z=pos.z-1},
+		{x=pos.x,y=pos.y,z=pos.z+1},	}
+	local newnode = false
+	local source = false
+	for i =1,6 do
+		if newnode then break end
+		local name = minetest.get_node(coords[i]).name
+		if name and (name == "pipeworks:pump_on" and pipeworks.check_for_liquids(coords[i])) or string.find(name,"_loaded") then
+			if string.find(name,"_loaded") then
+				source = minetest.get_meta(coords[i]):get_string("source")
+				if source == minetest.pos_to_string(pos) then break end
+			end
+			newnode = string.gsub(node.name,"empty","loaded")
+			source = {x=coords[i].x,y=coords[i].y,z=coords[i].z}
+		end
+	end
+	if newnode then 
+		minetest.add_node(pos,{name=newnode, param2 = node.param2}) 
+		minetest.get_meta(pos):set_string("source",minetest.pos_to_string(source))
+	end
+end
+
+pipeworks.check_sources = function(pos,node)
+	local sourcepos = minetest.string_to_pos(minetest.get_meta(pos):get_string("source"))
+	if not sourcepos then return end
+	local source = minetest.get_node(sourcepos).name
+	local newnode = false
+	if source and not ((source == "pipeworks:pump_on" and pipeworks.check_for_liquids(sourcepos)) or string.find(source,"_loaded") or source == "ignore" ) then
+		newnode = string.gsub(node.name,"loaded","empty")
+	end
+
+	if newnode then 
+		minetest.add_node(pos,{name=newnode, param2 = node.param2}) 
+		minetest.get_meta(pos):set_string("source","")
+	end
+end
+
+pipeworks.spigot_check = function(pos, node)
+	local belowname = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z}).name
+	if belowname and (belowname == "air" or belowname == "default:water_flowing" or belowname == "default:water_source") then 
+		local spigotname = minetest.get_node(pos).name
+		local fdir=node.param2
+		local check = {
+			{x=pos.x,y=pos.y,z=pos.z+1},
+			{x=pos.x+1,y=pos.y,z=pos.z},
+			{x=pos.x,y=pos.y,z=pos.z-1},
+			{x=pos.x-1,y=pos.y,z=pos.z}
+		}
+		local near_node = minetest.get_node(check[fdir+1])
+		if near_node and string.find(near_node.name, "_loaded") then
+			if spigotname and spigotname == "pipeworks:spigot" then
+				minetest.add_node(pos,{name = "pipeworks:spigot_pouring", param2 = fdir})
+				if finitewater or belowname ~= "default:water_source" then
+					minetest.add_node({x=pos.x,y=pos.y-1,z=pos.z},{name = "default:water_source"})
+				end
+			end
+		else
+			if spigotname == "pipeworks:spigot_pouring" then
+				minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:spigot", param2 = fdir})
+				if belowname == "default:water_source" and not finitewater then
+					minetest.remove_node({x=pos.x,y=pos.y-1,z=pos.z})
+				end
+			end
+		end
+	end
+end
+
+pipeworks.fountainhead_check = function(pos, node)
+	local abovename = minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z}).name
+	if abovename and (abovename == "air" or abovename == "default:water_flowing" or abovename == "default:water_source") then 
+		local fountainhead_name = minetest.get_node(pos).name
+		local near_node = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z})
+		if near_node and string.find(near_node.name, "_loaded") then
+			if fountainhead_name and fountainhead_name == "pipeworks:fountainhead" then
+				minetest.add_node(pos,{name = "pipeworks:fountainhead_pouring"})
+				if finitewater or abovename ~= "default:water_source" then
+					minetest.add_node({x=pos.x,y=pos.y+1,z=pos.z},{name = "default:water_source"})
+				end
+			end
+		else
+			if fountainhead_name == "pipeworks:fountainhead_pouring" then
+				minetest.add_node({x=pos.x,y=pos.y,z=pos.z},{name = "pipeworks:fountainhead"})
+				if abovename == "default:water_source" and not finitewater then
+					minetest.remove_node({x=pos.x,y=pos.y+1,z=pos.z})
+				end
+			end
+		end
+	end
+end